📘 About Statistics
Statistics is the branch of mathematics that helps us collect, organize, analyze, and interpret data. It helps us make sense of information, recognize patterns, and draw conclusions based on evidence.
Statistics is used in real life every day—from sports and science to business and health.
📊 Key Concepts in Statistics
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Data: Information collected from surveys, experiments, or observations.
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Types of Data:
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Qualitative (categorical): Descriptive data (e.g., hair color, car brand)
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Quantitative (numerical): Measurable data (e.g., height, test scores)
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Ways to Represent Data:
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Bar charts, pictograms, and line graphs
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Pie charts and frequency tables
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Stem-and-leaf plots and histograms
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Measures of central tendency:
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Mean: The average
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Median: The middle value
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Mode: The most frequent value
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Range: The difference between the highest and lowest values
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📈 Skills Developed
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Reading and interpreting visual data
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Drawing graphs and charts accurately
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Making decisions based on numerical evidence
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Developing data literacy for modern life
🧠 Example Topics
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Finding the average score from a set of numbers
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Creating bar and line graphs from a survey
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Identifying trends in climate data or class test scores
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Comparing data sets using mean, median, and range
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Calculating percentages from pie charts
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